Method for improving efficiency of anaerobic baffled reactor and pulse-type anaerobic baffled reactor

Abstract

The invention relates to a method for improving the efficiency of an anaerobic baffled reactor and a pulse-type anaerobic baffled reactor. Effluent treated by the anaerobic baffled reactor enters a water collecting tank and then partially enters a next processing unit, part of waste water enters the anaerobic baffled reactor again through an inlet of the anaerobic baffled reactor, and the flow ofwaste water which reflows to the anaerobic baffled reactor from the water collecting tank is 30%-100% of the flow of the waste water entering the anaerobic baffled reactor. The pulse-type anaerobic baffled reactor comprises the anaerobic baffled reactor, the water collecting tank and a water pump. Through the intermittent operation of the reflux water pump, impulse is endowed onto the water flow in the anaerobic baffled reactor to form impact on anaerobes at the bottom of the anaerobic baffled reactor, or the linear speed of the water flow in the anaerobic baffled reactor is improved when thewaste water quantity is lower, thereby promoting the full mixing of the waste water and anaerobic sludge; and shown by results, the COD (Chemical Oxygen Demand) removal ratio of the waste water by the anaerobic baffled reactor is improved by 18-32%, and the methane output is improved by 15-29%; meanwhile, the cost of waste water treatment is reduced.

Description

technical field [0001] The present invention relates to the field of wastewater treatment, in particular to a method that can be widely used in the treatment of high-concentration organic wastewater in the fields of papermaking, light industry, chemical industry, food, and pharmaceuticals to improve the COD removal rate of wastewater by a baffled anaerobic reactor . Background technique [0002] With the implementation of my country's energy-saving and emission-reduction strategy, all walks of life are working hard to reduce the discharge of wastewater, and the concentration of wastewater is increasing year by year. For the treatment of high-concentration organic wastewater, it is currently considered that the best treatment technology is anaerobic method. The method utilizes the metabolic characteristics of anaerobic microorganisms, and uses the reduced organic matter as a hydrogen acceptor under the condition of not needing to provide external energy, and simultaneously p...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the existing anaerobic reactor has a low COD removal rate in wastewater and that the biological sludge and the influent matrix cannot be fully mixed, the present invention provides a A method for improving the efficiency of a baffled anaerobic reactor and a pulsating baffled anaerobic reactor (P-ABR, Pulsing Anaerobic Baffled Reactor), which can effectively improve the mixing effect of wastewater organic matter and anaerobic bacteria, thereby improving the anaerobic reactor to The removal rate of COD in wastewater can achieve the purpose of reducing the cost of wastewater treatment

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